An optical component comprises a metasurface comprising nanoscale elements. The metasurface is configured to receive incident light and to generate optical outputs. The geometries and/or orientations of the nanoscale elements provide a first optical output upon receiving a polarized incident light with a first polarization, and provide a second optical output upon receiving a polarized incident light with a second polarization that is different from the first polarization.

A head-up display comprises an image-generating unit which is protected from damage caused by incident light from the outside, a corresponding mirror element, and a method for the manufacture of the head-up display. The head-up display comprises an image-generating unit, a deflection unit and a mirror unit. The deflection unit comprises a mirror element that comprises a spectrally partially reflecting layer, disposed on a substrate, on which an absorptive polarization layer is disposed.

[Object] An observation device according to an embodiment of the present technology includes an emission unit, an imaging unit, a polarization control unit, and a calculation unit. The emission unit sequentially emits a plurality of polarization light beams of mutually different polarization directions to a biological tissue. The imaging unit includes a plurality of pixels capable of outputting pixel signals respectively. The polarization control unit considers a predetermined number of pixels of the plurality of pixels as one group and causes mutually different polarization components of reflection light beams reflected by the biological tissue to be respectively incident upon respective ones of the predetermined number of pixels included in the one group. The calculation unit calculates biological tissue information regarding the biological tissue on the basis of the pixel signals output from the respective ones of the predetermined number of pixels.

A sensor includes a first image pixel array including first image pixels and a second image pixel array including second image pixels. A polarization layer is disposed between the first image pixels and the second image pixels. Scene light incident upon the second image pixels propagates through the first image pixels and the polarization layer to reach the second image pixels.

A laminate including: a first ply having a first surface and a second surface, where the first surface is an outer surface of the laminate; a second ply having a third surface facing the second surface and a fourth surface opposite the third surface, where the fourth surface is an inner surface of the laminate; an interlayer between the plies; and an enhanced p-polarized reflective coating positioned over at least a portion of a surface of the plies. When the laminate is contacted with radiation having p-polarized radiation at an angle of 60° relative to normal of the laminate, the laminate exhibits a LTA of at least 70% and a reflectivity of the p-polarized radiation of at least 10%. A display system and method of projecting an image in a heads-up display is also disclosed.

A privacy display comprises a polarised output spatial light modulator, reflective polariser, plural polar control retarders and a polariser. In a privacy mode of operation, on-axis light from the spatial light modulator is directed without loss, whereas off-axis light has reduced luminance. Further, display reflectivity is reduced for on-axis reflections of ambient light, while reflectivity is increased for off-axis light. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction and increased frontal reflectivity to ambient light. In a public mode of operation, the liquid crystal retardance is adjusted so that off-axis luminance and reflectivity are unmodified.

An example head-mounted display device includes a light projector and an eyepiece. The eyepiece includes a light guiding layer and a first focusing optical element. The first focusing optical element includes a first region having a first optical power, and a second region having a second optical power different from the first optical power. The light guiding layer is configured to: i) receive light from the light projector, ii) direct at least a first portion of the light to a user's eye through the first region to present a first virtual image to the user at a first focal distance, and iii) direct at least a second portion of the light to the user's eye through the second region to present a second virtual image to the user at a second focal distance.

Methods and systems are provided for separating polarized UV light. In one example, a method may include passing polarized source light through a first prism, the polarized source light including desired light and undesired light, separating the desired light from the fundamental light, and passing the separated desired light through a second prism. The separated desired light which is passed through the second prism may then be further passed through a spatial filter.

There are provided a lens device, an imaging apparatus, and an imaging method that suppress the occurrence of overexposure by dimming or blocking totally reflected light. The lens device (100) includes: an optical system (100A); a wavelength polarizing filter unit (130) that is disposed at a pupil position of the optical system (100A) or near the pupil position and includes a plurality of aperture regions, a plurality of optical filters that are disposed in the plurality of aperture regions and include two or more optical filters transmitting lights having a part of wavelength ranges different from each other, and a plurality of first polarizing filters that are disposed in the plurality of aperture regions and are at least two first polarizing filters having polarization directions different from each other; and a first circularly polarizing optical element (101) that is provided between a subject and the wavelength polarizing filter unit.

An optical apparatus and a near-eye display device are provided. The optical apparatus includes a light source, an angle selection unit, a light conversion unit, a first polarization unit, a second polarization unit, and a lens. The first polarization unit is disposed on a light-emitting side of the light source; a first surface of the first polarization unit faces a light-emitting surface of the light source; the angle selection unit is disposed opposite the first polarization unit; the light conversion unit is disposed on a side, away from the first polarization unit, of the angle selection unit; the second polarization unit is disposed opposite the angle selection unit; and the lens is disposed opposite the light conversion unit.